212100867 has 24 divisors (see below), whose sum is σ = 345749040. Its totient is φ = 124111680.

The previous prime is 212100841. The next prime is 212100883. The reversal of 212100867 is 768001212.

It is not a de Polignac number, because 212100867 - 2⁷ = 212100739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212100867.

It is not an unprimeable number, because it can be changed into a prime (212100067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34068 + ... + 39809.

It is an arithmetic number, because the mean of its divisors is an integer number (14406210).

Almost surely, 2^212100867 is an apocalyptic number.

212100867 is a deficient number, since it is larger than the sum of its proper divisors (133648173).

212100867 is a wasteful number, since it uses less digits than its factorization.

212100867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73923 (or 73920 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 212100867 is about 14563.6831536531. The cubic root of 212100867 is about 596.3677472717.

The spelling of 212100867 in words is "two hundred twelve million, one hundred thousand, eight hundred sixty-seven".